As mentioned in the chapter above, the ECM can be triggered to send a record of runtime data. These data consist of the current state (at the time of the query) of many input and output values, for example temperature sensores, injector pulsewidth and lots of other usefull information. These records can be stored in a binary or textual information (as done by the EcmSpy software) and looked at using a application like the MegaLogViewer software. The amount of data delivered by the ECM requires some experience in reading the logs, which can quickly gained by doing it frequently enough.

The record length of the runtime records differs between the various ecm types. The tube frame ECMs (first generation DDFI) emit the shortest runtime records, followed by the second generation DDFI-2 types of the fuel frame models.

Note:
For variables that have a scaling factor and/or a translational offset given, use this formula to calculate the output value:
output_value = (EEPROM_value * scale) + translate

Runtime records from DDFI-III ECM types are much larger than from the older DDFI and DDFI-II versions. The most recent ECM types support separate O2 sensor for front and rear cylinder as well as a post-cat O2 sensor to monitor catalyzer function. Several digital inputs as clutch, sidestand etc. are now monitored by the ECM too, to avoid the necessity of using error prone relais to prevent the engine from starting.

Note:
For variables that have a scaling factor and/or a translational offset given, use this formula to calculate the output value:
output_value = (EEPROM_value * scale) + translate

Please double-check all information from this site before using them!